/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/FFTProjection.h
void Apply ( const [TUniformGrid](API\Runtime\Chaos\Chaos\TUniformGrid)< [FReal](API\Runtime\ChaosCore\Chaos\FReal), 3 > & Grid, [TArrayND](API\Runtime\Chaos\Chaos\TArrayND)< [FVec3](API\Runtime\ChaosCore\Chaos\FVec3), 3 > & Velocity, const [TArrayND](API\Runtime\Chaos\Chaos\TArrayND)< bool, 3 > & BoundaryConditions, const [FReal](API\Runtime\ChaosCore\Chaos\FReal) dt )